Gas tanks

Lag time fast systems

Sample pressure - fast NOx

Surface O3 concentrations

Fast NOx data

TO DO list:
* Puff system.
* Check fast NOx calibration data.
* Calibration tank for enclosures.

Saturday, June 8th

TO DO:
* Puff system
* Drierite in oven
* Check HOBO#1 and HOBO#2
* Enclosure calibration tank: check temperature, perform leak test.
* Change cartridges on enclosure#2 at 4:45pm local time.

Friday, June 7th

Daily checks

  • Lab temperature = 20.8°C, AC temperature = 65F.
  • Case temperature: fast O3 = ~22.5°C, fast NOx = ~22.7°C.
  • PMT temperature: fast O3 = -35.8°C, fast NOx = 23.2 (PMT cooler off).
  • Changed drierite on both instruments.
  • Fast O3: OK, NO flow rate OK.
  • Fast NOx: off.
  • Gas tanks: OK.
  • Fast O3 laptop synchronized with time.nist.gov at 12:40pm AST.
  • Changed Zero Air tank at 5:20pm local time.

Enclosure #2

New sequence started. Will end tomorrow afternoon (4:45pm local time). 1) 4955 - 6/7/2019 10:45 to 6/7/2019 12:45
2) 4467 - 6/7/2019 13:45 to 6/7/2019 15:45
3) 4573 - 6/7/2019 16:45 to 6/7/2019 18:45
4) 4700 - 6/7/2019 19:45 to 6/7/2019 21:45
5) 4576 - 6/7/2019 22:45 to 6/8/2019 00:45
6) 4504 - 6/8/2019 1:45 to 6/8/2019 3:45
7) 4681 - 6/8/2019 4:45 to 6/8/2019 6:45
8) 90621 - 6/8/2019 7:45 to 6/8/2019 9:45
9) 4474 - 6/8/2019 10:45 to 6/8/2019 12:45
10) 995 - 6/8/2019 13:45 to 6/8/2019 15:45
In Alaska Standard Time (GMT-9).

Enclosure #1

We’re in the process of getting started with the standard tank. Detlev injected all the compounds and the tank is ready. Tank is connected to purge line (pump sending air to enclosure).
* tank temperatuare at 20.1°C at 5:45pm local time. Should reach 40°C. Check tomorrow.
* flow rate into enclosure 24.3 L/min.
* flow rate out of tank 10 mL/min.

GC/MS

New sequence: GCMS_Toolik_20190607. Samples TL_20190607_01 to _03: trash, I messed up. Sample TL_20190607_04 is Std3 BVOC (NPL). Then Ambient BVOC samples.

Fast NOx

Drained H20 several times and restarted H20 pump. Seems to be working just fine for now. PMT cooler restarted at 2:02pm AST. It still doesn’t work - I give up after several attempts. 5:22pm local time: H2O pump off, PMT cooler off, PMT HV off.

Thursday, June 6th

Fast NOx

PMT temperature increased to -20°C. Tried to remove air bubbles but didn’t do the trick. I turned off the PMT HV, the PMT cooler and the H20 pump. I will try to troubleshoot tomorrow.
### Daily checks
* Lab temperature = 21.8°C, AC temperature = 65F.
* Case temperature: fast O3 = ~23.2°C, fast NOx = ~20.8°C.
* PMT temperature: fast O3 = -35.4°C, fast NOx = -20.5°C.
Removed bug air bubble in H20 tubings at ~8:40am AST, will keep an eye on PMT temperature to see if that solved the problem. Okay, temperature slowly going down.
* Drierite: OK.
* Fast O3: OK, NO flow rate OK. * Fast NOx: OK. * Gas tanks: OK. * Fast O3 laptop synchronized with time.nist.gov at 8:39am AST.

Puff system

6 injections at (fast NOx time):
2019-06-06 08:56:43
2019-06-06 08:57:54
2019-06-06 08:58:59
2019-06-06 09:00:11
2019-06-06 09:01:57
2019-06-06 09:03:13

Wednesday, June 5th

Balloon

3 flights from 3:30am (local time) to breakfast. First two flights with O3 sonde only (clear gradient from ~10 to ~30ppbv). Third flight with bags as well to collected ambient air samples. Bags analyzed by Catie on TOF. The wind nearly crashed the balloon today around noon. We’ll have to fix a few things before we can lauch it again.

Enclosure #1

  • CO2 sensor connected to enclosure. Started collecting data around 3pm local time. Logging every 60 seconds.

  • Sequence on autosampler:
  1. 4583 - 6/5/2019 15:15 to 6/5/2019 17:15
  2. 4547 - 6/5/2019 18:15 to 6/5/2019 20:15
  3. 4672 - 6/5/2019 21:15 to 6/5/2019 23:15
  4. 4667 - 6/6/2019 00:15 to 6/6/2019 2:15
  5. 4438 - 6/6/2019 3:15 to 6/6/2019 5:15
  6. 4526 - 6/6/2019 6:15 to 6/6/2019 8:15
  7. 722 - 6/6/2019 9:15 to 6/6/2019 11:15
  8. 691 - 6/6/2019 12:15 to 6/6/2019 14:15
  9. 4477 - 6/6/2019 15:15 to 6/6/2019 17:15
  10. 4529 - 6/6/2019 18:15 to 6/6/2019 20:15

Enclosure #2

  • Sequence on autosampler:
  1. 4509 - 6/5/2019 14:15 to 6/5/2019 16:15
  2. 4725 - 6/5/2019 17:15 to 6/5/2019 19:15
  3. 4742 - 6/5/2019 20:15 to 6/5/2019 22:15
  4. 90633 - 6/5/2019 23:15 to 6/6/2019 1:15
  5. 4632 - 6/6/2019 2:15 to 6/6/2019 4:15
  6. 4492 - 6/6/2019 5:15 to 6/6/2019 7:15
  7. 703 - 6/6/2019 8:15 to 6/6/2019 10:15
  8. 763 - 6/6/2019 11:15 to 6/6/2019 13:15
  9. 721 - 6/6/2019 14:15 to 6/6/2019 16:15
  10. 4462 - 6/6/2019 17:15 to 6/6/2019 19:15

Daily checks

  • Lab temperature = 21.2°C, AC temperature = 65F.
  • Case temperature: fast O3 = ~23.2°C, fast NOx = ~20.5°C.
  • PMT temperature: fast O3 = -35.4°C, fast NOx = -28.8°C.
  • Drierite: OK.
  • Fast O3: OK, NO flow rate OK.
  • Fast NOx: OK but counts back to 300-400?!
  • Gas tanks: OK.
  • Fast O3 laptop synchronized with time.nist.gov at 2:51pm AST.

GC/MS

Note that I messed up yesterday when I restarted the sequence after the calibration runs. In inlet system sequence, a few samples where Ambient OVOC instead of Ambient BVOC. A few chromatrograms are thus empty. I updated the sequence at ~11am local time.

Tuesday, June 4th

Daily checks

  • Lab temperature = 23.0°C, AC temperature = 68F. Changed AC temperature to 65F at 9:19am local time.
  • Case temperature: fast O3 = ~25.1°C, fast NOx = ~22.5°C.
  • PMT temperature: fast O3 = -34.4°C, fast NOx = -31.7°C.
  • Changed drierite.
  • Fast O3: OK, NO flow rate OK.
  • Fast NOx: OK but high counts (5000-5500).
  • Gas tanks: OK.
  • Fast O3 laptop synchronized with time.nist.gov at 8:22 AST.

Enclosures

  • Enclosure #2 has been running all night, ends at 3:30pm AST. Saved HOBO#2 data at 9:22am AST. At the end of the sequence: checked autosampler flowrate (set = 250 mL/min, Defender = 275 mL/min). Enclosure moved to a different location at ~3:40pm AST.
  • Prepared enclosure #1. Checked flow rate pump (27 L/min) and leak check on the line (autosampler’s flow rate dropped to 0 when cap on line in bag). HOBO#1 started. Checked flow rate autosampler: set = 200 mL/min, Defender = 265 mL/min. We can start sampling BVOCs + CO2 tomorrow.

GC/MS calibration

Using Catie’s tanks.
* Calib B tank: samples TL_20190604_01 and TL_20190604_02.
* Calib A tank: samples TL_20190604_03 and TL_20190604_04.

I then restarted the sequence. Following samples are “Ambien BVOC” samples.

Monday, June 3rd

Daily checks

  • Lab temperature = 23.0°C, AC temperature = 68F.
  • Case temperature: fast O3 = ~24.7°C, fast NOx = ~22.5°C.
  • PMT temperature: fast O3 = -35.0°C, fast NOx = -32.2°C.
  • Drierite: OK, change it probably later today or tomorrow morning.
  • Fast O3: OK, NO flow rate OK.
  • Fast NOx: OK but high counts (5000-5500).
  • Gas tanks: OK.
  • Fast O3 laptop synchronized with time.nist.gov at 8:18 AST.

Enclosure #2

  • Autosampler #2 connected to Anssi’s sample line in the tent.
  • Put a cap on sample line in the bag (remove O3 scrubber) and autosampler’s flow rate decreased to 0.02 L/min. No leak on the line.
  • valves temp = 40°C, cartriges temp = 35°C.
  • Set of 10 cartriges:
  1. 90987 - 6/3/2019 15:00 to 6/3/2019 17:00
  2. 4545 - 6/3/2019 17:30 to 6/3/2019 19:30
  3. 90971 - 6/3/2019 20:00 to 6/3/2019 22:00
  4. 781 - 6/3/2019 22:30 to 6/4/2019 00:30
  5. 90951 - 6/4/2019 1:00 to 6/4/2019 3:00
  6. 4645 - 6/4/2019 3:30 to 6/4/2019 5:30
  7. 655 - 6/4/2019 6:00 to 6/4/2019 8:00
  8. 4536 - 6/4/2019 8:30 to 6/4/2019 10:30
  9. 259 - 6/4/2019 11:00 to 6/4/2019 13:00
  10. 90601 - 6/4/2019 13:30 to 6/4/2019 15:30

Sunday, June 2nd

Saturday, June 1st

Daily checks

  • Lab temperature = 22.1°C, AC temperature = 68F.
  • Case temperature: fast O3 = ~22.9°C, fast NOx = ~18.1°C.
  • PMT temperature: fast O3 = -35.3°C, fast NOx = -34.2°C.
  • Drierite: OK.
  • Fast O3: OK, NO flow rate OK.
  • Fast NOx: OK.
  • Gas tanks: OK.
  • Fast O3 laptop synchronized with time.nist.gov at 8:17 AST.

Puff system

3 injections at (fast NOx time):
2019-06-01 08:34:35
2019-06-01 08:36:05
2019-06-01 08:37:56

Enclosure #2

I checked HOBO data.

GC/MS

  • Detlev made changes to the method yesterday (BVOC_SCAN_SIM_190531.M): the oven stays at 120°C between samples now and decreases to 35°C when the run starts (the lower we go, the better the earlier peaks such as isoprene are). Today, we increased the max temperature of the method to 260°C instead of 250°C. Note that we did not change the method’s name, still BVOC_SCAN_SIM_190531.M.

  • Today we updated the SIM time segments:

We also updated the peaks for each segments:
* alkanes + CFC-11: 41, 43 (alkanes) 101, 103 (CFC-11).
* isoprene: 67, 68.
* CFC-113: 101, 151.
* metacrolein + MVK: 41, 55, 70.
* aromatics (benzene, toluene, xylenes): 78, 91, 106.
* MT: 68, 93, 121, 136.
* SQT: 204, 91, 93, 119, 69.

  • We disconnected the GC/MS line (tee that also goes to slow O3). The GC/MS is now connected to the enclosure #2 outside. We checked that there’s not leak putting a cap on the line outside.
    Sample TL_20190601_01.
    TL_20190601_02 is NPL.

BVOC bags

Kaixin and Jacob collected ambient air samples in 4 different bags. Catie analyzed them on the TOF.